which lens on A7 for Brenizer method?

If I wanted to play around with some shots using the Brenizer method on the A7, which lens would be better suited, the FE 55f18 or the 24-70f4 @ 70mm? I've only tried this method a couple times before and I don't know what would be more helpful, the reach or the larger aperture. I realize neither of these lenses are ideal.